This site from Jan. '10 mentions 70 infill holes drilled since the previous October, with ongoing drilling at Cerro Negro in Argentina for Andean.
http://www.andean.com.au/pdf/news/2010/andean_100120.pdf
In this 2007 article was reference to Phase 4 Drill Program at Cerro Negro.
http://business.highbeam.com/436240/article-1G1-170551742/results-phase-4-drilling-cerro-negro You have to sign up to read the whole article unfortunately.
Hopefully Quantec results will be considered a substitute for some drilling.